With partial new lines in Liaoning regional experiment in 2004 as entries, the correlation and cluster analysis on quality characters on japonica rice was made.
以辽宁省2004年区域试验部分新品系为试材，对辽宁水稻品质性状进行相关分析及品种聚类分析。
In the cluster analysis, the correlation matrix or the similarity matrix is directly used to make classification, but there is contradiction in itself, and paradox also occurs in the classification.
聚类分析直接利用相似矩阵或相关矩阵来分类，但它们本身存在矛盾，分类时也会出现矛盾。
It adopts space data characteristic compare, cluster analysis and correlation analysis, and synthetically utilizes GIS data model and the technology of computer to analyze the distribution network.
采用空间数据特征比较、时域聚类、相关性分析，综合利用配电网络GIS数据模型和计算机技术对配电网络进行深入的研究。
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